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Library system using pointers

Posted By: Easy Tutor     Category: C++ Programming     Views: 10641

Write a c program of library system which does below functions.

1) Add book
2) Purchase
3) Sale
4) Stock
5) Search
6) Display all

Code for Library system using pointers in C++ Programming

#include <iostream.h>
#include <conio.h>
#include <iomanip.h>

struct library

{

char author[20],title[20],pub[20];

int price;

library *next;

};

int sum=0;

void main()

{

clrscr();

library *head=NULL;

library *initial(void);

library *purchase(library *);

//library *sale(library *);void display(library *);

void stock(library *);

void search(library *);

int choice;

while(1) 

{

cout<<"Choose your Choice\n";

cout<<"1) Initial Data Entry\n";

cout<<"2) Purchase of Book\n";

cout<<"3) Sales of Book\n";

cout<<"4) Stock of Book\n";

cout<<"5) Search of Book\n";

cout<<"6) Display Books\n";

cout<<"7) Exit\n";

cout<<"Enter Your Choice:-";

cin>>choice;

switch(choice)

{

case 1 : head=initial();

getch();

break;

case 2 : head=purchase(head);

getch();

break;

// case 3 : head=sale(head);// break;case 4 : stock(head);

getch();

break;

case 5 : search(head);

getch();

break;

case 6 : display(head);

getch();

break;

case 7 : gotoout;

default: cout<<"\nInvalid Choice\nTRY AGAIN\n";

} 

clrscr();

}

out:

}

library *initial(void)

{

clrscr();

library *newl=NULL,*start=NULL,*end=newl;

char ch;

while(1)

{

cout<<"\n\nType y or Y for yes\n";

cout<<"Are you Interested in Entering Entry:-";

cin>>ch;

if(ch=='y' || ch=='Y')

{

newl=new library;

cout<<"\n\nEnter Author of Book:-";

cin>>newl- >author;

cout<<"Enter Title of Book:-";

cin>>newl->title;

cout<<"Enter Publication of Book:-";

cin>>newl->pub;

cout<<"Enter Price of Book:-"; 

cin>>newl->price;

sum=sum+newl->price;

if(start==NULL)

start=newl;

else

end->next=newl;

end=newl;

end->next=NULL;

}

elsebreak;

}

return(start);

}

library *purchase(library *start)

{

clrscr();

int pos,count=1,choice;

library *newl,*cnt=start,*head=start;

if(start==NULL)

cout<<"\n\nLIST IS EMPTY\n";

cout<<"\n\nChoose your Choice\n ";

cout<<"1) Inserting At FIRST POSITION\n";

cout<<"2) Inserting In BETWEEN\n";

cout<<"3) Inserting At LAST POSITION \n";

cout< <"4) Exit\n";

cout<< "Enter your choice:-";

cin>>choice;

if(choice >=1 && choice <=3)

{

newl=new library;

cout<<"Enter Author Name :-"; 

cin>>newl->author;

cout<< "Enter Book Title :-";

cin>>newl->title;

cout<<"Enter Publication :-";

cin>>newl->pub;

cout<<"Enter Price of Book:- ";

cin>>newl->price;

sum=sum+newl->price;

}

switch(choice)

{

case 1 : //for First position

newl->next=head;

head=newl;

break;

case 2 : //for Middle position

read:

cout<<"\n\nAt which position you want to insert Record:-";

cin>>pos;

while(cnt!=NULL)

{

count++; //cnt for counting variable of type node

cnt=cnt- >next;

} 

if(pos<1 || pos>count+1)

{

cout<<"\n\nEntered position is Invalid\nTRY AGAIN\n";

goto read;

}

{ //Extra Braces are used as case bypasses intialization of a local variableint c=1; 

while(c<pos-1)

{

c++;

start=start->next;

}

}

newl->next=start- >next;

start->next=newl;

break;

case 3 : //for Last positionwhile(start->next!=NULL)

start=start->next;

start->next=newl;

newl->next=NULL;

break;

case 4 : gotoout;

default: cout<<"\nEntered Choice is Invalid Try again\n";

break;

}

out: 

return(head);

}

void stock(library *start)

{

clrscr();

int count=0;

while(start!=NULL)

{

count++;

start=start->next;

}

cout<<"\n\n\n\tTotal Number of Books in Stock is "<<count<<endl;

cout<< "\tPurchase Price of Total Stock is "<<sum;

}

void search(library *start)

{

clrscr();

char author[20],title[20];

cout <<"Enter Book title and its Author name respectively to Search in stock\n ";

cin>>title>>author;

while(start!=NULL)

{

if(title==start->title)

{

if(author==start->author) 

{

cout<<"\n\nBook is In Stock\n";

cout<<"It Cost Rs"<<start->price;

return;

}

}

}

cout<<"\n\nSEARCH IS NOT IN STOCK\n";

} 

void display(library *start)

{

clrscr();

cout<<setw(10)<<"Book Title"<<setw(25)<<"Author of Book"<<setw(25)<<"Publication"<<setw(20)<<"Price" <<endl<<endl;

for(int i=0;i<40;i++)

cout<<"=*";

cout<<endl;

while(start!=NULL)

{

cout<<setw(10)<<start->title<<setw(25)<<start->author< <setw(25)<<start->pub<<setw(20)<<start->price<<endl;

start=start->next;

}

}
  
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Easy Tutor
Easy Tutor author of Library system using pointers is from United States. Easy Tutor says

Hello Friends,

I am Free Lance Tutor, who helped student in completing their homework.

I have 4 Years of hands on experience on helping student in completing their homework. I also guide them in doing their final year projects.

I have share many programs on this website for everyone to use freely, if you need further assistance, than please contact me on easytutor.2ya [at the rate] gmail [dot] com

I have special discount scheme for providing tutor services. I am providing tutor service to students from various contries, currently most of my students are from United States, India, Australia, Pakistan, Germany, UK and Canada.

I am also here to expand my technical network to receive more opportunity in my career, make friends to help them in resolving their technical problem, learn and share my knowledge, If you like to be my friend, Please send me friend request.

Thanks,
Happy Programming :)

 
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